I have Autometer guages and mine started acting crazy until one day it just quit. Autometer said I needed to replace my thermocouple(sensor at the exhaust) and that was wasted money. I sent the guage back and even though it was out of warranty they replaced for free. Now a year later it is starting to bounce back and forth when I am driving which gets your attention when you look at it and it reads 1600 deg. My dads truck has had sport comp Autometer guages for 2 years and now his pyro only works 20% of the time. I am looking at another brand now; too much trouble to keep replacing these. Just my 2 cents..............
